Error 26990 : Negative acknowledgement received sending data

If you encounter the above error, please carry out the following steps to resolve:

1) In Konnexions click on ‘Setup’ and select ‘Mailboxes’
2) Make sure the EXPWIN mailbox is highlighted and click on the open book button
3) Click next until you reach the ‘General’ window
4) If the Commit Size and/or Block Size are different to the above on your own system, please amend it to read the same as above
5) Click ‘Next’ and then click ‘Finish’
6) Close the Mailbox window
7) Click on ‘Utilities’ and select ‘Reset Session’
8) Click ‘OK’ when the message appears stating that the session has been reset
9) Finally reset the modem and try linking once again

If after connecting your Outbox flashes green, carry out the following steps to send the file:

1) Open the Outbox and ‘left click’ on the message to highlight it
2) ‘Right click’ on the message and set the status to ‘Unsent’
3) Close the Outbox and link again

If the same error appears it will now become necessary to try another modem to see if this works.

If the problem persists even after trying another modem, please contact the Support Team for further assistance.

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